won Heisman Trophy in 1985 and MVP of baseball All-Star Game in 1989; starter for both baseball's KC Royals and NFL's LA Raiders in 1988 and '89; severely injured left hip Jan. 13, 1991, in NFL playoffs; waived by Royals but signed by Chicago White Sox in 1991; missed entire 1992 season recovering from hip surgery; played for White Sox in 1993 and California in '94 before retiring.